Muffler for explosive engines



M. J. OCONNOR. MUFFLER FOR EXPLOSIVE ENGINES.

APPLICATION FILED AUG.2I,1919.

Patented Apr. 11, 1922.

v MTGHAEL J". ('YCOIbl'lll'OIt,v 01 BLOOMINGDALE, NEW JERSEY.

IUFFLEB'IOR EXPLOSI VE ENGINES.

To all whom it may concern: v

Be it known that I, MICHAEL J. OCoN- nor. a citizen of the United States, residing at Bloomingdale, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Mufflers for Explosive Engines, of which the following is a specification.

This invention relates to mufilers for exhaust lines and has for an-object to provide a muffler embodying new and improved features for insuring continuous the final discharge orifice. A further object of the, invention is to provide a mufiler which shall break up the exhaust from the ordinary exhaust line into a plurality of separate individual exhausts which are exhausted at .diiferent periods, whereby the several individual exhausts from the engine are converted into a practically continuous exhaust at the exhaust orifice.-

A further object of the invention is to provide a muiller which will break up the separate impulses of the normal exhaust into substantially a noiseless continuous discharge while oil'ering the minimum resistance and consequently the minimum back pressure.

Referring which form a part hereof and on which simi in reference characters indicate similar parts,

Fi re 1 is a longitudinal, vertical sectiona I view through the major diameter of the device, and

' Figure 2 is an end elevation of the conical passage as indicated by line 2-'2 of Figure 1.

. The improved invention which forms, the subject matter of-this ap lication is adapted to be attached to an or inary exhaust line 10 of an internal combustion engine. The

- haust line'lO. It is to be understood, how

which is seated the exterior cone 13.

device may be attached to the exhaust line in any approved manner. As shown at Fig} ure -1 a collar 11 is employed screw-threadedly connected with the extremity ofthe exever, that the manner of attaching the collar llis immaterial to the present invention.

Collar 11 provides a'*shoulder 12 u on e exterior cone 13 is at its base out upon a lane inclined to its axis, and is provided internally with a plurality of ribs. I Some of the ribs, as 14, extend throughout the length of the cone and meet at a'common discharge from to the accompanying drawings SpecificationofLettersPatent. Patented Apr. 11, 1922. Application fled August 21, 1919. Serial mi. 319,002.

point or apex at 15 substantially axially of the exhaust line 10.

Intermediate the long ribs 14 shorter ribs number of long and short ribs combined as 10 it is to be understood that the number of such ribs is in no way limited to or by a specific disclosure and the inventioncomprehends the use of any number of ribs convenient 01' desirable.

fAt some point in the length of the long ribs 14 an air duct 17 is introduced in such manner that air is taken in from the ex-' terior, as indicated more particularly at Figure 1, and-discharged part upon each side of the rib with which it is associated In this manner air is mixed with the exhaust gases-to cool the gases before they are further discharged. To limit the gases an internal cone 18 is employed which fits the inner edges or margins of the ribs 14 and 16. This limiting cone 18 forms a plurality of tapered passagesbetween the cones 13 and 18 extending from the point of the coupling 11 to the base of the cone. It will be noted that by reason of the inclination of the base of the cone relative to an axis that the I length of travel through the passages shown in Figure 1 as at the bottom of the figure is considerably less than the length of travel through the passages shown at the topof the figure and that the pamages intermediate the points shown at the top and bot tom respectively vary in such length from maximum to minimum. The exhaust from the line 10 will therefore be brokenu and delivered at the base of the cone at di erent intervals. 1 At the base of the cone a return guide 19 is provided in-the .form of a casting having divisions 20 corresponding with and abutting the several ribs 14 and 16, so that when the. exhaust thus divided as hereinbefore described, engages the return curve it alsoengagesbetween the partitions 20 and is directedas indicated by the several arrows to the interior of the inner cone 18, The return curve member '19 also serves as a means for holding the devicein assembled ion,

condition, bolts 20 being inserted through 1 threaded sockets in the sleeve 11. By tightening the bolts 21 the curve member 19 1s clam ed rigidly against the outer cone 1 3 curvemember 19. The chamber formed by the housing 23 and closure 24 is (provided with an exhaust orifice produce by the branch 26 preferably, though not necessarily, cast integral with the closure 24. A second branch 27 is also associated with the branch 26 with a damper or valve 28 hinged at 29 so that the said damper 28 may be swung by any approved and manual means to open communication through branch 26 or 27. The branch 27 is also preferably screw-threaded as at 30 so that any approved or' desired signal'device may be attached thereto and by manipulating the device 28 may be actuated as found necessary or desirable.

In operation it will be obvious that the exhaust gases from the exhaust line 10 will engage the several ribs 14 at their apex 15 and be divided into as many portions as there are ribs 14 before entering between the outer cone 14 and the inner cone 18. The

gases thus divided will also receive air V ally enlarge in carrying capacity as they approach the base of the cone. The portion of divided gases given the minimum passage to traverse, that indicated atthe bottom of Figure 1, will engage the'curve member 19 and be ejected into the interior and apex of the inner cone 18 first. The gases through the passage next longer will follow and be rapidly followed in succession by the gases from the various lengths of'passages 'until has been discharged. As all of the gases discharged from all of the passages of various lengths will be ejected to the apex of the in- ---ner cone 18, all start on their movement to the outlet orifice 26 fronrthe same point so that the varying lengths ofpassage is not' lost in the P ge from the inner cone to the outlet orifice, but the relation of the stepped discharge is maintained; By attacha signal-to thescrew-threads 30. and

properly manipulating the valve 38 con- 1 chanical means for operating t tinuousvalarm is provided not characterized by the pulsation of sound as is usually the case with signals attached to the exhaust line. It is obvious of course that while the signal to be attached to the threads 30 would be a horn of ordinary t pe, any mee signals or other device may be attached in any manner found desirable.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

l. A muffler comprising a chamber, conduits discharging into the chamber at varying distances from one end, means for reversingthe direction of the exhaust gases between said conduits and said chamber and means for conducting the exhaust gases away from the chamber, substantially as set forth.

2. A mufiler comprising a chamber, conduits discharging into the chamber at varying distances from one end, means for re- :versing the direction of the exhaust gases between said conduits and said chamber, means to attach to an exhaust-line terminus at the said end and means to divide each exhaust impulse to discharge through all of said conduits substantially as set forth. a

3. A mufiler for explosive engine exhausts, comprising a conical member adapted to be attached to an exhaust line, a second conical member spaced from the first conical member, the said associated conical members being out upon a plane inclined to the axis, partitions interposed between the conical members, producing by reason of different lengths, means to discharge the gases from the several passages to a common point, and means to receive and educt the gases from such common point. i

4. A mufiler for explosive engines, comprising a conical member open at its apex, a second conical member disposed within the first conical member and closed at its'apex, ribs formed between theconical members dividing the intervening space into a plurality of passages increasing in carrying capacity from the apex to the cone, means disposed at the base of the cone for directing the discharged gases into the interior and apex of the inner cone, and means to receive and educt the gases from the inner cone.

5. A mufiler for explosive engines, comprising a conical member having an o ening at its apex, a conical member dispose within the first conical member and closed at its apex, both of said conical members having their bases out upon a plane inclined to' the axis of the cone, ribs interposed between the conical members dividing the intervening space into a plurality of passages increas' g in carrying capacity and varying in length, means at the base of the cone to receive the discharge gases and direct them to'ithe interior and apex of the inner cone,

and means to receive and educt the;v gases from the inner cone.

6. A mufller for explosive engines comprising a cone having an opening. in its apex, means for connecting the opening in the cone with theexhaust line from the explosive engine, a second cone disposed within and spaced from the first mentioned cone, ribs interposed between the cones forming a plurality of passages from the apex to the base of the spaced cones. said cones being cut upon a plane at their bases-inclined to the axis producing thereby variation of length .of the said several passages. a curve member secured to the base of the combined cones and providing a passage directed to the interior and apex 'of the inner cone, and a housing positioned at the opening of the curvemember adapted to receive and educt gases from the inner coneQ 7. A mufiler for explosive engines, comprising spaced members providing a p1urality of passages communicating with the exhaust line of the engine, which said passages'vary in length, means to receive the gases from the passages of varying lengths and discharge them to a common point, a housing positioned .to receive the gases deflected from the common point, an egress orifice formed in the housing, a second orifice communicating with the first mentioned ribs and providing means for attaching a signal device and a manual valve interposed in the egress orifice adapted to direct the gases through either discharge opening.

In \vitnesswhereof, I have hereunto set my hand and seal at lVashington, D. (1., this 20th dav of August, A. D. nineteen hundred and nineteen.

MICHAEL J. OCONNOR. EL. s.] 

